Lead acid battery with gelled electrolyte formed by...

H - Electricity – 01 – M

Patent

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Details

H01M 10/08 (2006.01) H01M 2/16 (2006.01) H01M 2/18 (2006.01) H01M 10/00 (2006.01) H01M 10/10 (2006.01) H01M 10/12 (2006.01)

Patent

CA 2475296

A method for producing a lead acid battery that operates on the oxygen cycle is disclosed. The method includes the steps of: assembling a cell comprising a positive plate, a negative plate, and a sheet of separator material which is an absorbent, porous filtration medium, so that there is free space between the plates and surfaces of the separator; inserting the cell into a case, introducing into the case a mixture of sulfuric acid and silica including silica from a never dried precipitated silica slurry, causing the sulfuric acid in the mixture in the free space to gel, and sealing the case. The sulfuric acid in the mixture in the free space can be caused to gel by an increase in the silica content thereof, by an increase in the specific gravity thereof, or by both an increase in the silica content thereof, and an increase in the specific gravity thereof.

L'invention concerne un procédé de production d'une batterie d'accumulateurs au plomb qui fonctionne sur le cycle de l'oxygène. Ledit procédé comprend les étapes suivantes : assembler une pile comprenant une plaque positive, une plaque négative, et une feuille de séparateur qui est un absorbant, un support de filtration poreux, de sorte qu'un espace libre entre lesdites plaques et les faces des séparateurs soit créé ; insérer la pile dans un boîtier ; introduire à l'intérieur dudit boîtier un mélange d'acide sulfurique et de silicium comprenant du silicium provenant d'une boue de silicium précipitée jamais desséchée ; insérer l'acide sulfurique dans le mélange dans l'espace libre au gel ; et fermer le boîtier. L'acide sulfurique contenu dans le mélange dans l'espace libre peut être inséré au gel par son augmentation dans le contenu de silicium, par son augmentation dans la gravité spécifique, ou par à la fois son augmentation dans le contenu de silicium et son augmentation dans la gravité spécifique.

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